
:root{
  --px-bg:#07111f;--px-bg2:#0a1930;--px-panel:rgba(12,27,47,.88);--px-panel2:#0d2037;--px-border:rgba(155,176,207,.16);
  --px-text:#f8fbff;--px-muted:#91a6c1;--px-soft:#6d829e;--px-cyan:#37d6ee;--px-blue:#5d69ff;--px-green:#29d59a;--px-yellow:#f4b740;
  --px-shadow:0 26px 70px rgba(0,0,0,.26);--px-radius:24px;
}
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@media(max-width:680px){.px-container{width:min(100% - 20px,1220px)}.px-topbar{padding:11px 0}.px-brand small{display:none}.px-top-actions .desktop-link{display:none}.px-hero{padding-top:12px}.px-hero h1{font-size:clamp(2.25rem,13vw,3.6rem)}.px-hero-copy p{font-size:.82rem}.px-grid-3,.px-grid-4,.pr-grid-v2,.px-syllabus,.px-bottom-grid{grid-template-columns:1fr}.px-quiz-body,.px-quiz-intro,.px-result{padding:17px}.quiz-options{grid-template-columns:1fr}.quiz-question{font-size:.98rem}.quiz-actions{flex-direction:column;align-items:stretch}.quiz-actions .px-btn{width:100%}.px-save-box{flex-direction:column;align-items:stretch}.px-share-actions{grid-template-columns:1fr}.px-score{font-size:3.5rem}.px-share-score{font-size:3.6rem}.px-footer{flex-direction:column}.px-nav-link{min-height:38px}.px-stats strong{font-size:1rem}.px-stats span{font-size:.55rem}}

.note-modal-backdrop{position:fixed;inset:0;z-index:50;background:rgba(1,6,15,.78);backdrop-filter:blur(8px);display:grid;place-items:center;padding:18px}.note-modal{width:min(760px,100%);max-height:85vh;overflow:auto;border:1px solid rgba(55,214,238,.2);border-radius:22px;background:#0b1829;box-shadow:0 35px 100px rgba(0,0,0,.45);padding:22px;position:relative}.note-modal h3{margin:7px 42px 10px 0;font-size:1.3rem}.note-modal p,.note-modal li{color:#9aadc2;font-size:.78rem;line-height:1.7}.note-modal ul{padding-left:18px}.note-close{position:absolute;right:16px;top:14px;width:35px;height:35px;border-radius:50%;border:1px solid rgba(148,163,184,.15);background:rgba(255,255,255,.03);color:#fff;font-size:1.2rem;cursor:pointer}.inline-note{border:0;background:none;color:#75e1ef;font:inherit;font-size:.6rem;font-weight:900;cursor:pointer;padding:0}\n